This disclosure applies to the field of thermal power
energy storage, providing a scheduling method and
system for
coupling thermal power and thermal storage. When it is necessary to reduce the power generation of a thermal
power unit, the flow rate of process steam drawn from the
turbine unit of the thermal
power unit is increased; the heated circulating thermal storage medium flows into an underground thermal storage unit, which includes heat exchange pipes buried in the soil. The circulating thermal storage medium is drawn from the underground thermal storage unit and transported to a
heat exchanger, allowing the circulating thermal storage medium to exchange heat with the
heat supply medium to heat the
heat supply medium. By introducing an underground thermal storage unit coupled with buried pipes and a closed-loop
system, this invention transfers the
waste heat from the process steam of the
turbine unit to the circulating thermal storage medium through a thermal
storage heater, and then allows it to enter the underground thermal storage unit to exchange heat with the soil.
Excess heat energy is stored in the underground soil over time periods, so that the regulation of power generation and the process of external
heat supply are no longer intertwined.